/*
 * ============================================
 * Tefsir.ba - Main Stylesheet
 * Moderan, čitljiv, pristupačan dizajn
 * ============================================ */

/* ============================================
   CSS Custom Properties (Variables)
   ============================================ */
:root {
    /* Primary Colors */
    --color-primary: #1a5f4a;
    --color-primary-light: #2d8b6e;
    --color-primary-dark: #114136;
    --color-secondary: #c9a961;
    --color-secondary-light: #dcc184;
    --color-secondary-dark: #a68943;
    
    /* Neutral Colors */
    --color-bg: #fafaf9;
    --color-surface: #ffffff;
    --color-border: #e7e5e4;
    --color-border-light: #f5f5f4;
    
    /* Text Colors */
    --color-text: #1c1917;
    --color-text-secondary: #57534e;
    --color-text-muted: #78716c;
    
    /* Arabic Text */
    --color-arabic: #0f4c3a;
    --color-arabic-bg: #f0fdf4;
    
    /* State Colors */
    --color-success: #16a34a;
    --color-warning: #ea580c;
    --color-error: #dc2626;
    --color-info: #0284c7;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Typography */
    --font-primary: 'Merriweather', Georgia, serif;
    --font-arabic: 'Amiri Quran', 'Amiri', 'Traditional Arabic', serif;
    --font-sans: 'Noto Sans Arabic', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    --line-height-loose: 2;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --color-bg: #0f1419;
    --color-surface: #1a1f2e;
    --color-border: #2d3748;
    --color-border-light: #252d3d;
    
    --color-text: #e2e8f0;
    --color-text-secondary: #a0aec0;
    --color-text-muted: #718096;
    
    --color-arabic: #6ee7b7;
    --color-arabic-bg: #1a2e25;
    
    --color-primary: #2d8b6e;
    --color-primary-light: #3fa882;
    --color-primary-dark: #1a5f4a;
}

/* ============================================
   Base Styles & Reset
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-text);
    background-color: var(--color-bg);
    transition: background-color var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
}

.tefsir-body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: var(--line-height-tight);
    color: var(--color-text);
    margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-4);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast), opacity var(--transition-fast);
}

a:hover,
a:focus {
    color: var(--color-primary-light);
    text-decoration: underline;
}

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ============================================
   Skip Link (Accessibility)
   ============================================ */
.skip-link {
    position: absolute;
    top: -100px;
    left: var(--spacing-4);
    z-index: 9999;
    padding: var(--spacing-3) var(--spacing-6);
    background-color: var(--color-primary);
    color: white;
    font-family: var(--font-sans);
    font-weight: 600;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--spacing-4);
    text-decoration: none;
}

/* ============================================
   Navigation Bar
   ============================================ */
.navbar {
    background-color: var(--color-surface);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-5) 0;
    transition: all var(--transition-base);
    z-index: var(--z-sticky);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    padding: var(--spacing-2) 0;
}

.navbar-brand {
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.navbar-brand:hover {
    transform: translateY(-2px);
    text-decoration: none;
}

.brand-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    margin-right: var(--spacing-6);
}

.brand-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    box-shadow: var(--shadow-md);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
}

.brand-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-family: var(--font-sans);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-link {
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: var(--font-size-base);
    color: var(--color-text);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
}

.nav-link:hover,
.nav-link:focus {
    background-color: var(--color-bg);
    color: var(--color-primary);
    text-decoration: none;
}

.nav-link.active {
    background-color: var(--color-primary);
    color: white;
}

/* Search Group */
.search-group {
    min-width: 250px;
    margin-left: var(--spacing-5);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.search-input {
    border: 1px solid var(--color-border);
    border-right: none;
    padding: var(--spacing-2) var(--spacing-4);
    font-family: var(--font-sans);
    transition: border-color var(--transition-fast);
}

.search-input:focus {
    border-color: var(--color-primary);
    box-shadow: none;
}

.search-btn {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    padding: var(--spacing-2) var(--spacing-5);
    transition: all var(--transition-fast);
}

.search-btn:hover,
.search-btn:focus {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

/* ============================================
   Breadcrumbs
   ============================================ */
.breadcrumb-wrapper {
    background-color: var(--color-bg);
    padding: var(--spacing-3) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.breadcrumb {
    background: transparent;
    margin-bottom: 0;
    padding: var(--spacing-2) 0;
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
}

.breadcrumb-item a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-weight: 500;
}

.breadcrumb-item a:hover {
    color: var(--color-primary-light);
    text-decoration: underline;
}

.breadcrumb-item.active {
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* ============================================
   Main Content Area
   ============================================ */
.main-content {
    flex: 1;
    padding: var(--spacing-12) 0;
}

/* ============================================
   Arabic Text Styling
   ============================================ */
.arabic-text,
[lang="ar"] {
    font-family: var(--font-arabic);
    font-size: calc(var(--font-size-base) * 1.4);
    line-height: var(--line-height-loose);
    direction: rtl;
    text-align: right;
    color: var(--color-arabic);
    background-color: var(--color-arabic-bg);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    border-right: 4px solid var(--color-secondary);
    margin: var(--spacing-6) 0;
}

/* ============================================
   Cards & Containers
   ============================================ */
.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-clickable {
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.card-clickable:hover {
    text-decoration: none;
    color: inherit;
}

/* ============================================
   Floating Action Button (FAB)
   ============================================ */
.fab-container {
    position: fixed;
    bottom: var(--spacing-8);
    right: var(--spacing-8);
    z-index: var(--z-fixed);
}

.fab-trigger {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border: none;
    color: white;
    font-size: var(--font-size-2xl);
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.fab-trigger:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.fab-trigger[aria-expanded="true"] i {
    transform: rotate(45deg);
}

.fab-menu {
    position: absolute;
    bottom: 70px;
    right: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.fab-trigger[aria-expanded="true"] + .fab-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.fab-action {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-5);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: 500;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.fab-action:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateX(-5px);
}

.fab-action i {
    font-size: var(--font-size-lg);
}

/* ============================================
   Reading Progress Bar
   ============================================ */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-secondary), var(--color-secondary-light));
    z-index: calc(var(--z-fixed) + 10);
    transition: width 100ms linear;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-12) 0 var(--spacing-6);
    margin-top: auto;
}

.footer-heading {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-4);
    font-family: var(--font-sans);
}

.footer-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.app-badges {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.app-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--radius-lg);
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.app-badge:hover {
    background-color: var(--color-primary-dark);
    color: white;
    transform: translateY(-2px);
    text-decoration: none;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-2);
}

.footer-links a {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--color-primary);
    text-decoration: none;
    padding-left: var(--spacing-2);
}

.footer-stats {
    display: flex;
    gap: var(--spacing-6);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-2);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-family: var(--font-sans);
}

.footer-bottom {
    margin-top: var(--spacing-10);
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.copyright,
.credits {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-family: var(--font-sans);
    margin: 0;
}

/* ============================================
   Header Styles - KRITIČNO ZA ZELENU POZADINU
   ============================================ */

/* Header sa zelenom pozadinom i bijelim tekstom */
.py-5.text-center {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)) !important;
    color: white !important;
}

/* Svi naslovi u headeru */
.py-4 h1,
.py-5 h1,
header h1,
.display-5,
.py-4 .h1,
.py-5 .h1 {
    color: white !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Paragrafi i lead tekst u headeru */
.py-4 p,
.py-5 p,
.py-4 .lead,
.py-5 .lead,
header p {
    color: rgba(255, 255, 255, 0.95) !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Text-muted u headeru treba biti svijetao */
.py-4 .text-muted,
.py-5 .text-muted,
header .text-muted {
    color: rgba(255, 255, 255, 0.9) !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Header sa border-bottom (za manje istaknute headere) */
.py-4[style*="border-bottom"] {
    background: var(--color-bg) !important;
}

.py-4[style*="border-bottom"] h1,
.py-4[style*="border-bottom"] p {
    color: var(--color-text) !important;
    text-shadow: none !important;
}

.py-4[style*="border-bottom"] .text-muted {
    color: var(--color-text-muted) !important;
    text-shadow: none !important;
}

/* ============================================
   Utility Classes
   ============================================ */
.text-muted {
    color: var(--color-text-muted) !important;
}

.text-primary {
    color: var(--color-primary) !important;
}

.bg-surface {
    background-color: var(--color-surface);
}

/* ============================================
   Button overrides - sve plave u zelene
   ============================================ */
.btn-primary {
    background-color: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
    color: white !important;
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
    background-color: var(--color-primary-dark) !important;
    border-color: var(--color-primary-dark) !important;
    color: white !important;
}

.btn-outline-primary {
    color: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
    background-color: transparent !important;
}

.btn-outline-primary:hover,
.btn-outline-primary:focus,
.btn-outline-primary:active {
    background-color: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
    color: white !important;
}

.badge.bg-primary,
.badge.rounded-pill {
    background-color: var(--color-primary) !important;
    color: white !important;
}

.btn-light {
    background-color: white !important;
    color: var(--color-primary) !important;
    border-color: white !important;
}

.btn-light:hover {
    background-color: rgba(255, 255, 255, 0.9) !important;
    color: var(--color-primary-dark) !important;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 991.98px) {
    :root {
        --font-size-4xl: 1.875rem;
        --font-size-3xl: 1.5rem;
    }
    
    .brand-name {
        font-size: var(--font-size-xl);
    }
    
    .brand-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-xl);
    }
    
    .search-group {
        min-width: 100%;
        margin-top: var(--spacing-3);
        margin-left: 0;
    }
    
    .fab-container {
        bottom: var(--spacing-4);
        right: var(--spacing-4);
    }
    
    .nav-link {
        padding: var(--spacing-4) var(--spacing-3);
    }
    
    .navbar {
        padding: var(--spacing-4) 0;
    }
}

@media (max-width: 767.98px) {
    .main-content {
        padding: var(--spacing-8) 0;
    }
    
    .site-footer {
        padding: var(--spacing-8) 0 var(--spacing-4);
    }
    
    .footer-stats {
        justify-content: space-around;
    }
    
    .py-5 h1,
    .display-5 {
        font-size: var(--font-size-3xl) !important;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .navbar,
    .breadcrumb-wrapper,
    .fab-container,
    .site-footer,
    .search-group {
        display: none !important;
    }
    
    body {
        background-color: white;
        color: black;
    }
    
    .main-content {
        padding: 0;
    }
    
    a {
        color: black;
        text-decoration: none;
    }
}

/* ============================================
   Accessibility - Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}